# text-replace-html-webpack-plugin

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This package is intended to be used along with html-webpack-plugin. It can be used to replace text in the html file created by the html-webpack-plugin during the webpack build process. Works only wth webpack@^4

Might be used to import gzipped files (eg. bundle.js.gz) instead of .js (bundle.js) in the index.html generated by HtmlWebpackPlugin.

# Installation

Install with npm:

```bash
npm install --save-dev text-replace-html-webpack-plugin
```

# Options

You can pass configuration objects in the `replacementArray` to `text-replace-html-webpack-plugin`.
Allowed values are as follows

This internally uses String.prototype.replace(). See https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/replace for more info

| Name                      | Type                       | Description                                       |
| :---:                     |     :---:                  | :---                                              |
| **[`regex`](#)**          | `{Regular Expression}`     | The Regular Expression to be used to search       |
| **[`searchString`](#)**   | `{String}`                 | The string to be search and replaced. If regex is also provided, this will be ignored      | 
| **[`replace`](#)**        | `{String \| function}`     | Replacement of searchString                       |



# Basic Usage

Add plugin to webpack config `plugins`. And pass the replacementArray.

```javascript
const HtmlWebPackPlugin = require("html-webpack-plugin");
var CompressionPlugin = require('compression-webpack-plugin');
const TextReplaceHtmlWebpackPlugin = require('text-replace-html-webpack-plugin');
const path = require('path');

const htmlWebpackPlugin = new HtmlWebPackPlugin({
  template: path.resolve(__dirname, 'index.html'),
  filename: "index.html"
});

module.exports = {

    mode : 'production',

    output: {
        path: path.resolve(__dirname, 'output'),
        filename: '[name].js'
    },

  module: {
    rules: [
      {
        test: /\.js$/,
        exclude: /node_modules/,
        use: {
          loader: "babel-loader"
        }
      },
    ]
  },
  plugins: [
    htmlWebpackPlugin,
    new CompressionPlugin({
        filename: "[path].gz[query]",
        algorithm: "gzip",
        test: /\.js$|\.css$|\.html$/
        }
    ),
    new TextReplaceHtmlWebpackPlugin({ replacementArray : [
        {
            regex : /abcd/ig,
            replace : 'xyz'
        },
        {
            //Will give warning, not error. (As error would have stopped the webpack build)
            regex : /js/ig,
            searchString : 'def',
            replace : (match) => match + '.gz'
        },
        {
            searchString : 'def',
            replace : 'aaa'
        },
        {
            //Will give warning, not error. (As error would have stopped the webpack build)
            searchString : '/index/ig',
            replace : 'newIndex'
        }
    ]
    }),
   ]
};

```